Grain-scouring machine



Mar. 27, 1.923.

- E. B. ENDSLOW GRAIN SCOURING MACHINE Filed June 16, 1922 mum lllllllll l Z'glvuzmd 55mm Feed.

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Patented Mar. 27, 1923.

MNETED STATES EDMUND B. ENDSLOW, DECEASED,

ADMINISTRATRIX, OF GAHANNA,

LATE OF GAHANHA, OHIO, BY CAIDDIE ENDSLOW, OHIO, ASSIGNOR OF ONE-THIRD TO HELEN 1M1.

MILLER, OF WASHINGTON, DISTRICT OF GOLUMBIA.

GRAIN-SCOURING MACHINE.

Application filed June 16, 1922. Serial No. 568,898.

To all whom it may concern:

Be it known that I, CADDIE ENDSLOW, ministratrix of the estate of EDMUND ENosLow, deceased, late a citizen of the United States, residing at Ga-hanna, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Grain-Scouring Machines, of which the following is a specification.

This invention relates to an improved machine primarily adapted for-the purpose'of scouring, polishing or conditioning the grain of wheat for the purpose of automatically and mechanically separating the outer bran layers of the grain from the internal and heavier flour producing particles, and to provide ancillary means whereby the heavier particles of the grain will be delivered to one outlet of the machine and the lighter outer particles delivered'to an independent separate outlet, the arrangement being such that the grain will be thoroughly conditioned for the. subsequent action of the milling rolls and wherein the outer extraneous bran layers and particles will be reduced to a minimum,

The invention consists in the provision of a machine of the aforesaid character wherein is provided a casing having a conveyor chamber formed therein, said conveyor chamber communicating at one end with means for introducinggrain therein, and said chamber having positioned therein a screw conveyor capable of advancing the grain toward the outlet end of the chamber, said chamber being provided with a radial pocket, and the conveyor shaft being extended to provide a support for rotating longitudinally disposed boaters oragitators an to also receive a device which tends to force the grain in a direction opposite to that effected by the conveyor, the discharge end of the cylinder or chamber being provided with a pressure regulated door or valve which operates when the pressure within the cylinder reaches a predetermined point, to permit of the discharge of the grain from the cylinder into an asperating duct, through which induced currents of air are passed to allow thelighter or outer particles of the grain to be carried in one direction through the duct.

and to permit the heavier particles or the nucleus of the grain to drop through said B. let door bein projecting end of said shaft may duct, independently of the air currents, to a separate outlet, the construction of the outsuch that the grain will be confined withm the cylinder for predetermmed periods in order to be subjected to the beating action of the agitators and to permit said agitators to be brought into intimate contact with the grainwhil the latter is under pressure, the said radial pocket serving to prevent the grain from rotating in unison with the agitators and hence to insure the desired engagement between the agitators and grain for the purpose specified.

For further understanding of the invention, reference is to be had to the following dee ription and to the, accompanying drawing, in which similar characters of reference denote like and corresponding parts throughout the several views thereof. In said drawing: 7

Figure lis a vertical sectional view taken through the grain cleaning or scouring machine comprising the present invention, and, Figure 2 is a vertical transverse sectional view taken along the plane disclosed by the line 2-2 of Figure 1.

Referring more particularly to the details of the invention, use is made of a grain cleaning. or scouring machine 1, which in this instance is formed to include a cylinder case 2, which includes an internal longitudmally extending cylinder 3. The forwardend of this cylinder communicates as at 4:

with a delivery chute 5, into which the raw or unprepared grain maybe introduced in any suitable manner such for example as by means of conveyors or by hand. Obviously, by introducing grain d into the chute 5, the said grain will be led or forced by gravity into the forward or inlet end of the cylinder 3. H

Extending longitudinally and axially of the cylinder 3 is a, shaft 6, which has its ends suitably journaled for rotation, the forward end of said shaft being disposed to extend through a journal 7 provided in the forward end of the cylinder case 2, and the outer be equipped with a pulley 8 or other device whereby power may be imparted to the shaft. to effect the forced rotation thereof. Locatedoupon the shaft 6 and mounted to rotate therewith is a conveyor 9, which is positioned immediately in certain instances beneath the chute 5 so as to receive grain discharged from the latter. It will be observed'that the conveyor 9 is of the ordinary screw type and its pitch'is such as to cause the grain deliveredinto the forward end of the cylinder 3 to be positively advanced toward the rear or discharge end thereof when the said conveyor is rotated.

Located upon the shaft 6 and disposed at the end of the conveyor or conveyors 9 is an agitator 10, which in this instance, consists of a. hub 11 andradiating blades or arm's'l2, the said arms -being disposed so as to engage with the grain positioned within the cylinder and to churn, agitate or mix the latter so that frictional contact orrelative movement between the grain will result of subsequent operations, the saidl'coverin in. loosening the outer husk, fibrous coveringsor bran layers thereof, from the internal nucleus of the grain, whereby by means may be separated from the kernel of the grain to facilitate milling operations. In

order to prevent the grain from revolving in unison with the shaft 6 and its associated members so that frictional contact orfrelative;- movement between the various parts thereof will be minimized, the case 2 is formed to include a radial or circumferen the cylinder 3 by the conveyor v 9,; and will grain to'be forced upwardly 13, which action will-effec-i thus enabl'e the intorthe pocket tively serve topreclude-rotation of 'the grain in unison with the shaft 6.. Tothe rear of the conveyor 14, the-"shaft .6 is' provided with a plurality of longitudinally aligned agitators 15, -Whl0h are similar-in construction and operation to the agitator 10 and operate for the same purpose. That is',

the said agitators-willserve, as their name indicates, to beat. or mix the grain'within the cylinder 3, and to cause thegrain par:

.ticles to frictionally rub or engage one another, whereby the outer fibrous husksof the gram wlll be automatically loosened and separated from the body of thegrain, in,-

order that a.- subsequent separation of such husksfro the grain proper may be later efi'ected.

In} order to augment the frictional engage;

ing, polishing or conditioning; operation of the gram is'carried on under pressure, a

feature which results in causing the grain particles'to be brought into closer frictional engagement and combining to insure the loosely mounted upon the shaft 6, and carries a hub 19, with which is associated a forked arm 20 which terminates in .the horizontally disposed outwardly extending rod 21, the latter being mounted for sliding -movement within'the wall of an asperating .duct 22, which is disposed for communication with the. discharge end of the cylinder 3. The outer projecting end of the rod 21 may be suitably connected with or may frictionally engage the short arm 23 of a bell crank lever 24, which latter is pivotally gs mounted as at 25 upon a'fixed support. The

long arm of thelever 24 extends horizontally and has its outer portion equipped with notches 26, with. which are adapted to be asso-fiated'a depending weight 27.- It will be manifest. that by this "construction,.-the pressure upon the .door or' valve 17 may be suitably varied or regulated by shifting or adjusting the positions of the weight 27 relative tothe outer endof the lever 24.' It will thus be manifest that grain will be positively forced into the cylinder 3 by the action of the conveyor 9, but that the escape of such grain willbe limited or arrested by the action of the pressure regulated door 17. Thus.- thegrain will be confined within the cylinder 3 betweenthe elements 9 and 17 .and accordingly will be subjected to the" action of the revolving heaters or agitators 10 and 15. Manifestly, considerable pressure will thus be placed upon. the grain con- ;finediwithin the cylinder .3 and this pressure serves to auginenftthe action of the agitators and causes the grain particles'to move relativelyto each other under such friction that the outer husksof the grain will be loosened and removed from the internal portions thereof. When the pressure within the cyl- 'inder 3- reaches a'predete'rmined point, the.

door or valve 17 y will be automatically opened '-to' allow the grain to be discharged into the duct 22. It will be observed at this juncture that thearms of the agitators are located on a slight angle, in order that the agitators "will work the grain toward the discharge end of the cylinder. Moreover, it will' be noted that the grain may be worked while -in a dry condition, or water may be added '2 thereto jfor moistening purposes. Furthermore. adjustment may be made in the effecment between the gram particles, the scour tiveaction of the agitators by varying the positions of 'theweie'ht '27 in connection with the lever 24. When, the grain is dis- .clliiarn'ed from the cylinder. 3, it passes into 't e upper portion branch 28 and an upwardly extending branch 29, the branch 29 terminating' in contiguity with a suction creating fan 30 which latter operates to eilect induced air currents within the duct. Thus, when the scoured or conditioned grain is discharged t'rom the cylinder 3, the lighter outer layers or husks thereof will be'caught by the air currents and delivered into the branch 29, whereas the internal heavier particles of the grain will drop by gravity, against the action of the fan 30 into the branch 28 of the asperating duct. Thus, mechanism has been provided bythepresent invention for efiectively loosening the outer fibrous covering of the grain and to permit such covering to be separated from the grain proper and delivered to an independent outlet for separate collection. The nucleus of the grain may then be subjected to ordinary well known operations for the production of flour or other prepared grain. The

of the branch 29 may be provided with an outlet 31, which operates in the event of the heavier particles of grain passing into the branch 29 to receive and collect such heavier particles and to prevent the same from being transmittedtoward the extending fan 30.

From the foregoing description taken in connection with the accompanying drawing,

it is believed that the advantages of the invention will be readily perceived by those versed in the art, together with the construction and operation of the mechanism described, therefore, a more extendederjplanation, relative to the theory of operation and mechanlral equipments, has been accordingly omitted.

What is claimed is:

1. Ina grain separating machine, a cylinder case having a cylinder formed therein, grain inlet means disposed at one end of said cylinder, a conveyor cooperative with said inlet means for advancing grain rearwardly of said cylinder toward the discharge outlet thereof, longitudinally aligned agitators rotatable with said conveyor and disposed between said conveyor and said discharge outlet, said cylinder being provided with a circumferential pocket, and a banking device rotatable with said conveyor and operating to force said grain into said pocket.

2. In a grain scouring machine, a cylinder case having a cylinder provided therein, grain inlet means in communication with said cylinder, a conveyor operating in conjunction with said inlet means to force grain longitudinally of said cylinder toward the discharge out-let thereof, rotary positioned between said conveyor and the discharge outlet of said cylinder and operating to cause relative movement in the mass of grain introduced into said cylinder, said cylinder being provided between said conveyor and the discharge outlet thereof with a circumferential pocket, and a device i'otatable in-unison with said conveyor to force the grain into said pocket. whereby undue rotation on the part of said grain in unison with said conveypr and agitators will be precluded.

In testimony whereof I aflix my signature.

GADDIE aunsnow,

agitators Admin-istmtriw of the estate of. Edmund B.

Emislow, deceased. 

